Apparatus for shaking out chills and castings



Nov. 5, 1935- G. w. BEHNKE 2,020,131

APPARATUS FOR SHAKING OUT CHILLS AND CASTINGS Filed Nov. 25, 1953 3Sheets-Sheet l INVENTCR.

g4. ATTORNEY.

Nov. 5, 1935- e. w. BEHNKE 2,020,131

' APPARATUS FOR SHAKING OUT CHILLS AND CASTINGS I Filed Nov. 25, 1933 sSheets-Sheet 2' I. 7 I g fl ATTORNEY.

Nov. 5, 1935- w, EH 2,020,131

APPARATUS FOR SHAKING OUT CHILLS AND CASTINGS Filed Nov. 25, 1933 3Sheets-Sheet 3 v 51 ea 4 6 32 E1/ 50 IN VEN TOR.

ATTORNEY.

Patented Nov. 5, 1935 UNITED STATES.

arraaa'rus ron srmxmc our cnmns m oasrmcs George W. Behnke, Durand,Simplicity Engineering Mich a corporation of Michigan Mich assignor toCompany, Durand,

Application November 25, 1933, Serial No. 699,684-

g 6 Claims. This invention relates to a method and apparatus for'shakingout-castings, chills, sand, or

A further object resides in the various steps for shaking out themoulds, screening the sand,-shaking out the casting and chills, crushingthe lumps,-

or storage bin.

- The above and other objects will appear as the specificationprogresses, reference being had to the accompanying drawings inwhich Ihave shown the preferred embodiment of my invenand conveying the chillsto a suitable receptacle 'tion, and in which like reference numeralsindicate like parts throughout the severalviews thereof.

In the drawings' a Fig. 1 is a part sectional side view showing theshakeout screen, conveyers, etc.

Fig. 2 is a top plan view.

Fig. 3 is a front view.

Fig. 4 is an enlarged part sectional detail ofthe crushing plate.

Fig. 5 is an enlarged detail side view of the crusher bars, the brokenline position illustrating the bars raised to permit the passage of thechills.

'Fig. 6 is a fragmentary side view ofthe shakeout screen showing analternate crushing means.

Fig. 7 is a front view thereof. 7 1

Fig. 8 is an enlarged detail of the crushing discs and bearing supports.

Fig. 9 is anend view thereof.

Referring nowmore particularly to the draw-.

ings, the numeral 2 indicates a gyrating screening machine such as used.for screening sand, gravel, coal, and other fragmentary materials; thisis supported on' a main frame comprising beams or standards 3 which arein turn mounted on a base 4, the screen beingdriven by means of a motor5 which is connected to any suitable source ofelectrical supply. Thisscreening device can be of any desired de- A gyrator shaft assembly 6 isjournaled in bearings which are mounted on the beams 3, and side' plates8 are mounted on said gyrator shaft and form a screen frame, a grizzlyor shakeout screen 9 being secured on said plates and on which 8 thecope of the mould (not shown) is placed by a workman stationedalongsidethe machine.

A perforated screen I0 is mounted on the side plates below said grizzly,and the sand from the cope falls thereon and sifts through said screen,1m with the exception of the burnt lumps which are not broken up by thescreen action, together with pieces which are too large to pass theopenings in the screen to; these "lumps travel toward the discharge endof the screen and are reduced by means of a crushing attachment tobehereinafter described.

An angle iron frame I I is mounted on the beams 3 at the discharge endof the screen and com-- prises corner member I2 connected by means of.20 horizontally disposed angles I3, spaced apart longitudinallydisposed members 14 being secured to said angles 13 so that a rigidsuperstructure is provided.

. A horizontally disposed rod' I 5 is mounted in 25 the angle l3 whichspans the frame, and a pluprovided in said bars, and a transverselydisposed rod I8 is mounted in said openings, links H! being connectedpivotally to said rod, the upper ends of said links being connected toan eye bolt 20, the upper end of the eye bolt being threaded and whichis mounted iii the cross members l3, the nuts 2|. serve to hold thebolts in position, and also serve as an adjusting means for raising orlowering the bars to accommodate chills of various thicknesses, and itwill be obvious that as the burnt lumps of sand and the chills traveltowards the crushing plate that. the large lumps of sand will engage thecurved section A of the bars and be gradually crushed to size to passthe screen I, the chills passing beneath "the crushing bars anddischarging off the apron}; into a receptacle, bin, or. onto a conveyer(not shown) These bars which make up the crushing unit are free to raiseand lower (within certain units) independent of each. other,consequently, one or more of said bars may be raisedto permit passage ofchills or" other .solid objects, the remain- 55' ing bars being. innormal low position to crush lumps of sand or slag.

In operation the top half of the cope is placed on the grizzly 9, andall the sand is shaken out;

this sand, together with any hard lumps, drops onto the perforatedscreen In, and the sand is screened through onto hoppered plates 23 and24, which direct it onto an endless belt conveyer 25.

The burnt sand lumps which are too large to pass this perforated plateare carried to the lower end of the screen and against the curvedsection B of the bars l6, and are gradually crushed so that they readilypass the screen Ill. After the cope has reached the lower end of thegrizzly it is disposed of as desired. I

The workman next takes the lower half of the mould or flask which istermed the drag, and which contains the castv parts, burnt sand, andchills; this is placed on the upper end of the grizzly, the fine sand,burnt lumps, and chills pass the grizzly and fall onto the perforatedplate, the castings and flask remaining on said grizzly until thoroughlycleaned of sand and chills, after which ,it is removed as usual.

The burnt lumps of sand togetherwith the chills travel down the screenH), the lumps being crushed as hereinbefore described, the chillspassing beneath the crushing bars, raise only the bars necessary topermit their passage, the a jacent bars remaining in normal position.

An alternate crushing means is shown in Figs. 6 to 9 inclusive, andcomprises a plurality of discs 26 having a hub 21 formed integraltherewith, said hub serving to space the discs from each other. Thesediscs are mounted on a transversely disposed shaft 28, the end of theshaft being mounted in a slotted opening 29 provided in a bearing hanger30, the upper end of the hanger terminating in a cylindrical threadedsection 3| which projects through the frame members l3, and a nut 32 isprovided so that theshaft assembly may be adjusted vertically.

In the present illustration, 1 have shown three separate shaftassemblies C, D, and fE; these are identical in every respect and arelongitudinally spaced and at different elevations so that burnt lumps ofsand or slag readily travel i downwardly and are crushed by engagementwith these discs. The discs are independent of each other, and theslotted bearing hanger permits a limited vertical movement of the shaftassembly.

In the construction shown in Figs. 8 and 9 of the drawings, the discsare rotatable on the shaft 28 and are rotated by contact with thegyrating screen, but it will be clearly understood that these discs maybe keyed on the shaft and positively driven if desired by providing amotor (not chills, and castings from flasks or the like.

What I claim is:

1. An apparatus for shaking out chills, comprising a main frame, ascreen frame mounted thereon, a sand screen mounted on the screen frame,a grizzly spaced above the sand screen, a

vertically movable crushing mechanism mounted 5 on the main frame andcooperating with the lower end of the sand screen for crushing lumps offragmentary materials, and means for gyrating saids'creen frame.

2. An apparatus for shaking out sand and solid 10 objects from mouldsand comprising a main 1 frame, a screen frame mounted thereon,vertically spaced screens mounted on said screen frame,

a vertically adjustable crushing apparatus mounted on the main frame andin engagement with the 15 lower end of the lower screen, and means forgyrating said screen frame.

3. An apparatus for shaking out sand and solid objects from moulds,comprising a main frame,

a gyrating mechanism journaled on said frame, 20 vertically spacedscreens mounted on said gyrating mechanism, a vertically'adjustablecrushing mechanism pivotally mounted on the main frame with its lowerend engaging the face of the lower screen, and means for driving saidgyrat- 15 ing mechanism.

4. An apparatus for shaking out sand and solid objects from mouldscomprising a main frame,

a gyrating unit journaled on said main frame, a screen frame mounted onsaid unit and including spaced apart screens, and a crushing unitpivotally mounted on themain frame at the discharge end of the lowerscreen and comprising a plurality of bars mounted to move independentlyof each other, and means for adjusting the height of said bars withrelation' to the face of the screen.

5. An apparatus of the class described and comprising a main frame, agyrating unit journaled thereon, a screen frame mounted on said unit and40 including vertically spaced screens, a crushing unit mounted on themain frame and in contact with the face of the lower screen, said unitcomprising a plurality of pivotally mounted individual barrnembershaving vertically disposed slotted openings in the lower end thereof,and a rod hung from the main frame and mounted in said slotted openingsto provide for a limited vertical movement of one bar with relation tothe other.

' 6. An apparatus of the class described and com- 50 prising a mainframe, a gyrating unit journaled thereon, a screen frame mounted on thegyrating unit and comprising vertically spaced screens, with the lowerscreen extending beyond the end 5 of the upper screen, a crushing unitpivotally mounted on the main frame at the end of the upper screen andcomprising a plurality of crushing bars, slotted openings in said bars,a transversely disposed rod extending through said slot- 50 tedopenings, and means connected to said rod and to said main frame foradjusting said crush- I ing unit with relation to the lower screen.

GEORGE W. BEHNKE.

